Hi All
My engine is being rebuilt. Just had this from the shop... “At sometime someone had die ground out the ports in your oil pump.” Anybody heard of this as a mod on the V12 engine? What benefit might it give?
Photo to follow tomorrow.
Cheers!
Nigel
Oil Pump Modifications
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panamacarrera
Topic author - Posts: 95
- Joined: Sun Jul 09, 2017 4:36 pm
- Location: Southport, UK

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panamacarrera
Topic author - Posts: 95
- Joined: Sun Jul 09, 2017 4:36 pm
- Location: Southport, UK

#2 Re: Oil Pump Modifications
Hi again
Here's a photo pf the modification we've found on my V12's oil pump...
Any ideas why someone would do this? For what benefit?
Cheers!
Nigel

Here's a photo pf the modification we've found on my V12's oil pump...
Any ideas why someone would do this? For what benefit?
Cheers!
Nigel

'71 S3 OTS
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christopher storey
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- Location: cheshire , england

#3 Re: Oil Pump Modifications
The only thing I can think of is that it would/might reduce turbulence in the oil flow and thereby improve oil flow or possibly prevent cavitation , although AFAIK cavitation is more a problem with impeller type pumps rather than gear ones
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#4 Re: Oil Pump Modifications
As Christopher says to improve flow.
I've certainly seen this recommended and done in 6 cylinder oil pumps but I have no experience with V12 ones. I doubt it has done any harm.
I've certainly seen this recommended and done in 6 cylinder oil pumps but I have no experience with V12 ones. I doubt it has done any harm.
Andrew.
881824, 1E21538. 889457. 1961 4.3l Mk2. 1975 XJS. 1979 MGB (supercharged).
Adelaide, Australia
881824, 1E21538. 889457. 1961 4.3l Mk2. 1975 XJS. 1979 MGB (supercharged).
Adelaide, Australia
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panamacarrera
Topic author - Posts: 95
- Joined: Sun Jul 09, 2017 4:36 pm
- Location: Southport, UK

#5 Re: Oil Pump Modifications
Thanks Chris & Andrew.
I've decided to go for a new oil pump. The car seems to have had oil supply problems in the past and this modified pump can't be ruled out as a culprit.
Thanks again guys
Nigel
I've decided to go for a new oil pump. The car seems to have had oil supply problems in the past and this modified pump can't be ruled out as a culprit.
Thanks again guys
Nigel
'71 S3 OTS
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